Abstract
Many engineering structures consist of plates being stiffened by ribs. The ribs can be connected
to the plate in a line connection (welded or glued) or in point connections (screwed). It is well
known that the rib stiffeners can significantly change the vibration field and the radiation behavior
of the structure. These types of structures have thus often been studied in the past. However, there
is still a lack of simplified expressions for the sound transmission of these structures. Therefore,
simplified expressions for the forced airborne sound transmission of finite size single leaf ribbed
plates have been derived, using a variational technique based on integral-differential equations of
the fluid loaded plate. In this way an optimal solution is derived, using a very simple initial guess
of the vibration field. The finite plate is assumed being mounted in a rigid baffle. The approach is
based on the theory derived for a non-stiffened single finite plate [J. Brunskog, JASA 132, 1482-
1493, 2012]. Basic results for the ribbed plate have previously been reported, but with a poor fit to
measured data. In this paper, this approach is investigated further, trying to explain the previous
misfit and improve the model. The influence of point versus line connections, as well as periodicity
effects, is investigated.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of Novem 2015 |
| Number of pages | 10 |
| Publication date | 2015 |
| Pages | 529-538 |
| Article number | 48945 |
| Publication status | Published - 2015 |
| Event | Noise and vibration Emerging Technology 2015 - Excelsior Hotel, Dubrovnik, Croatia Duration: 13 Apr 2015 → 15 Apr 2015 |
Conference
| Conference | Noise and vibration Emerging Technology 2015 |
|---|---|
| Location | Excelsior Hotel |
| Country/Territory | Croatia |
| City | Dubrovnik |
| Period | 13/04/2015 → 15/04/2015 |